121222012201 has 2 divisors, whose sum is σ = 121222012202. Its totient is φ = 121222012200.

The previous prime is 121222012129. The next prime is 121222012253. The reversal of 121222012201 is 102210222121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119561042176 + 1660970025 = 345776^2 + 40755^2 .

It is a cyclic number.

It is not a de Polignac number, because 121222012201 - 2⁷ = 121222012073 is a prime.

It is not a weakly prime, because it can be changed into another prime (121222012291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611006100 + 60611006101.

It is an arithmetic number, because the mean of its divisors is an integer number (60611006101).

Almost surely, 2^121222012201 is an apocalyptic number.

It is an amenable number.

121222012201 is a deficient number, since it is larger than the sum of its proper divisors (1).

121222012201 is an equidigital number, since it uses as much as digits as its factorization.

121222012201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121222012201 its reverse (102210222121), we get a palindrome (223432234322).

The spelling of 121222012201 in words is "one hundred twenty-one billion, two hundred twenty-two million, twelve thousand, two hundred one".